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Synthesis of Artificial Zeolite from Coal Fly Ash by Alkali Treatments Triyatmo, Bambang
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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Coal fly ash was treated with alkali (NaOH) water solution by heating up to about 100 oC for 12 and 24 hours. The coal fly ash used in this experiment was obtained from PLTU (Steam Power Electric Station) Suralaya, West Java, Indonesia. It was passed through a wire sieve with filter size of 46 mm. The NaOH solutions were reacted 0.5, 1.0, 1.5, 2.5, 3.5 and 4.5 M. The final products of the reactions were designated as ‘artificial zeolites’. Result of this experiment indicated that the cation exchange capacity (CEC) of ‘artificial zeolites’ were increased by increasing NaOH concentration up to 2,5 M. Higher CEC value of the 24 hours treated coal fly ash than that of the 12 hour treated ones. The CEC of ‘artificial zeolites’ increased by about 50 time for the coal fly ash. The XRD (X-ray Diffraction) pattern of the coal fly ash treated by 2,5 M NaOH which had highest CEC value were present new crystalline matters (possibility phillipsite) with sharp diffraction peaks at 2.7, 3.2, 3.3, 4.1, 5.1, 7.1 Å. The infrared (IR) spectrum of the ‘artificial zeolite’ exhibited the broad absorption band around 1,000 cm-1 and at about 3,500 cm-1. The analyzed ‘artificial zeolite’ showed steep descent around 100 oC in TG (Thermogravity), a small endothermic peak below 100 oC and a deep endothermic peak from 130 oC in DTA (Differential Thermal Analysis), representing presence of micropore structure of new zeolite species (probability phillipsite). The scanning electron micrograph of the ‘artificial zeolite’ showed spherical structure with chinks formed in the 2,5 M NaOH treatment.
Improvement of Cation Exchange Capacity of Natural Zeolite with Alkali Treatments Hanudin, Eko; Triyatmo, Bambang
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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The natural zeolite was treated with alkali (NaOH) solution and heating at 100 oC for 12 and 24 hours. The natural zeolite was collected from Gunungkidul, Jogjakarta, Indonesia. The series of NaOH solutions was 0.5, 1.0, 1.5, 2.5, 3.5 and 4.5 M. The final product of the reaction (precipitate) was designated as ‘activated natural zeolite (ANZ)’. The cation exchange capacity (CEC) of the ANZ increased with increasing NaOH concentration up to 1.5-3.5 M. Treatment with NaOH 3.5 M and 12 hours in period of hydrothermal reaction resulted in a maximum CEC (395.6 cmol.kg-1). The maximum CEC also observed for treatment with NaOH 1,5 M, but consumed a longer time (24 hours). The increase in the CEC of the ANZ about 300 % higher than the original one. The XRD (X-ray Diffraction) peaks of the ANZ appear at 2.7, 3.2, 4.1, 5.1, 7.2 Å, this indicated a new crystalline matters (possibility phillipsite) present. Electron micrograph showed that the ANZ has a large cubic/prismatic structure with a perfect form.
STUDI KESESUAIAN LAHAN PESISIR UNTUK TAMBAK DI KECAMATAN NGOMBOL KABUPATEN PURWOREJO Triyatmo, Bambang
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
Publisher : Universitas Gadjah Mada

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The objective of this study was to know the feasibility of the coastal area for shrimp and fish pond based on physical, chemical and biological parameters of soil and water as well as topographycal situation.The results of the study indicated that : .i). the coastal area in Ngombol district Purworejo regency was suitable for pond, .ii). the area have two kinds of land units, namely clay alluvial and sandy land units, iii). the former one was suitable for conventional pond constraction, fertile and acid soil, .iv).  the latter  was unsuitable for conventional pond constraction, unfertile and slightly-netral soil, .v). the water for shrimp and fish culture might be supplied from Cokroyasan and Lereng rivers (fresh-brackiswater),  well (freshwater), and directy from intestidal zone for seawater.vi). in general, the water quality were suitable for shrimp and fish  culture.This study suggested that in the clay alluvial soil, extensive and intensive ponds might be developed. However, intensive pond should be developed in the area with sandy soil.
KUALITAS DAN KESUBURAN AIR BUDIDAYA LELE DUMBO (Clarias gariepinus) DENGAN VOLUME PERGANTIAN AIR BERBEDA Triyatmo, Bambang
Jurnal Perikanan Universitas Gadjah Mada Vol 4, No 2 (2002)
Publisher : Universitas Gadjah Mada

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Study was conducted to evaluate the quality and productivity of water used during two period catfish culture for 5 months. Catfish fries were cultured in fiberglass containers for two and  three  months  without draining. During 5 months, 0, 5, 10, 20 or 40  percent of total water volume were replaced daily. The quality and productivity of water were observed every months.Results  indicated that  the decrease of water qualities were more notebly when the water replacement in the culture system was carried out in less portion. However, the less portion of the water replacement made higher water fertility for the growth of phytoplankton.
KUALITAS AIR DAN TANAH TAMBAK UDANG YANG MENDAPAT PERLAKUAN PENGERINGAN DAN AERASI SETELAH PENGGENANGAN Triyatmo, Bambang; Radjagukguk, Bostang; Lelana, Iwan Yusuf Bambang
Jurnal Perikanan Universitas Gadjah Mada Vol 1, No 1 (1996)
Publisher : Universitas Gadjah Mada

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The experiment was carried out to evaluate the water and soil quality of pond, which were subjected to drying and aeration after inundation. The objective of the experiment was to find out which soil drying and water aeration treatments were the best for shrimp culture.The soil used was obtained from an intensive shrimp pond and sea water was collected  from pond area in jepara coast. The soil drying treatments consisted of drying the wet soil under the sun to air dry condition, field capacity condition and water saturated condition. The soil drying treatments were carried out for 64 days. The aeration treatments after inundation consisted of with aeration and without aeration. Soil less sea water also was prepared as control. The aeration treatments were carried out for 64 days. The soil and water quality were  observed during soil drying and water aeration treatments.Result of this experiment indicated that drying the pond bottom soil until field capacity condition gave the highest rate of organic matter decompotition followed by air dried soil, then water saturated oil. The decompotition of soil organic matter in the field capacity condition reached optimum on day 8 to 16. The pond bottom soil in water saturated condition contained lower NH3, NO2- and H2S than ind dried soil. Aeration gave better condition than the non aeration one. It seemed the best water quality condition for shrimp fry stocking occurred 4-8 days after inundation combined with aeration.
KAJIAN MORFOMETRI BERDASARKAN TOPOGRAFI DAN POTENSI PERIKANAN WADUK SERMO Triyatmo, Bambang
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
Publisher : Universitas Gadjah Mada

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The  objectives of this studies was to know morphometric characteristics, primary productivity of water, and the fisheries potency of Sermo reservoir. Topography and fisheries potency were estimated based on a morphometrical study of Sermo reservoir after inundation. The study was conducted on the topographical maps with 1 : 12,500 scale and 10 m contour intervals. The primary productivity of Sermo reservoir after inundation was observed.The results showed that Sermo reservoir had an optimal level 136.6 m msl with a total water area 157 ha, water volume 25 millions m3, length of shore line 16,3 km and shore line development index 3,67. The primary productivity of water ranged from 2.2 to 178.7 mg C/m3/h. Potential area for fish culture using floating net cage was 1.5 ha with total production around 300 ton/year. The potency for endogenous and introduction fish production in the Sermo reservoir was approximately 5-10 ton/year.
BUDIDAYA TERPADU LELE DUMBO DENGAN TANAMAN ECENG GONDOK (Eichornia crassipes), KANGKUNG AIR (Ipomea aquatica) DAN KAPU-KAPU (Pistia stratiotes) Triyatmo, Bambang; Probosunu, Namastra
Jurnal Perikanan Universitas Gadjah Mada Vol 4, No 2 (2002)
Publisher : Universitas Gadjah Mada

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Catfish (Clarias gariepinus) was cultured with an aquatic plant, water hyacinth/eceng gondok  (Eichornia crassipes), kangkung air (Ipomea aquatica) or kapu-kapu (Pistia stratiotes) in concrete ponds, for 3 months. Catfish cultured without aquatic plant was used as a control. The experiment was carried out to evaluate the survival rate as well as the growth of fish and aquatic plants.The survival rates of catfish cultured with I. aquatica, E. crassipes, and P. stratiotes were 76, 87, and 98%, respectively. In addition the survival rate of catfish cultured without any aquatic plant was 93%. The weight gain of catfish was 14,1-16,2 kg per pond. Whereas, the total weight gains of aquatic plant were 37,0,  27,7 and 7,7 kg per pond for E. crassipes, P. stratiotes, and I. aquatica,. Respectively. Dissolved oxygen, and the concentrations of NH3, NH4+ and PO43- in water with aquatic plants were higher than that of in water without aquatic plant. However, the concentration of CO2 was higher in water with aquatic plant.
PEMANTAUAN PLANKTON DAN KUALITAS AIR TAMBAK UDANG WINDU INTENSIVE DI LAHAN PASIR PANTAI Triyatmo, Bambang
Jurnal Perikanan Universitas Gadjah Mada Vol 5, No 1 (2003)
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A research was conducted in intensive ponds of shrimp (Penaeousmonodon) culture located in sandy coastal area Pandansimo, Bantul Regency. Shrimp was cultured in two ponds (± 3.600 m2 each). The bottom of the first pond was 5-10 cm of soil. The second pond used sand originated from the coastal area as the bottom. Shrimps were cultured in the two ponds for 4.5 months. During the culture, plankton and water quality of ponds was observed for 3 times, namely on early, middle and final of shrimp culture.Result of the experiment indicated that 1). Density of plankton in both increased during shrimps culture; 2). Density of plankton in the pond with soil bottom was higher than in that of the pond with sand bottom; 3). The productivity of ponds increased; 4). As higher plankton density increase the absorption of NH4 and PO4, the availability of these nutrient gradually lowered; 5). Species composition of plankton in ponds with soil bottom was dominated by Spirulina sp. Brachionus sp., and Chlorella sp.; 6) In addition species composition of plankton in ponds with sand bottom was dominated by., Brachionus sp., Chlorella sp., Spirulinasp., and Cyclotella sp.; 7) During shrimp culture, the water qualities of the ponds were commonly in the optimal condotions for shrimp; 8) Water quality for the first three months of culture generally was suitable for shrimp culture both in pond with soil and sand bottom. However, after 90 days of culture, the dissolved oxygen in ponds with soil and sand bottom ranged from 2.0 to 3.0 mg/l, which was unsuitable for shrimp culture; 9) The production, survival rates and average body weights of shrimp were 3.18 ton/ha, 12.23 g and 42.3% from pond with soil bottom, and 3.51 ton/ha, 14.43g and 43.38% from pond with sand bottom, respectively.
ZEOLIT MEMPERTAHANKAN KUALITAS AIR DAN MENINGKATKAN PERTUMBUHAN LELE DUMBO (Clariasgariepinus) Triyatmo, Bambang
Jurnal Perikanan Universitas Gadjah Mada Vol 5, No 1 (2003)
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The objectives of this research were to know the effects of zeolite on the water quality and the growth of catfish. Catfishes were cultured in fiberglass containers (±24 l) with 5-10% of water exchange/container/day, for 3 months. The stocking density was 8 fishes/container (3 fishes/l water). Zeolite was added at 0, 125, 250, 500 mg/l/month.Result of this experiment indicated that zeolite at 125, 250, 500, mg/l/month decreased free CO2, alkalinity and NH3 of water during 3 months culture of catfish. The body weight increasment of catfish cultured in treated water with zeolit at 125, 250, 500 mg/l/month were 188, 195, and 222 g, respectively, which were higher than that of catfish cultured in untreated water.
STUDI KONDISI LIMNOLOGIS WADUK SERMO PADA TAHAP PRA-INUNDASI Triyatmo, Bambang
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
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A study on the limnologic conditions of Sermo reservoir  was conducted  from September  1996 to January 1997. Water samples were collected from six stations every ± 25 days. The samples from each station were collected from 2 to 3 different depths of water. The objectives of this research were to know the physically, chemically and biologically water quality of Sermo reservoir. Results indicated that the water quality of Sermo reservoir was suitable for fishes. The concentration of NH4+, NO3-, PO43-, dan SO4= indicated that the water fertility could support the growth of plankton as natural food for fishes and other aquatic organisms. However, the water quality and its productivity have not been stabile yet. Phytoplankton was more dominance than zooplankton. Number of phytoplankton species were between 10 - 15 species, that was dominated by Nitzschia sp., Nostoc sp. and Peridinium. Zooplankton species observed were Brachionus  sp. and Cyclops sp. Any aquatic plants were not found.